Why does Marvel continue to always divide the Mutants and the Avengers ?

@kgb725: The whole thing about the mutants is that they are outsiders and alone. If Marvel had the Avengers always coming along to help with the mutant problems it would diminish that dynamic and take away the 'protect humans even though they fear you' story. The Avengers have had mutants on their team since issue 14. Since they make the editorial decision to keep the franchise stories separate for the most part and since the X-men story is about persecution, a lot of modern writers have taken that story line of saying that the Avengers don't care about the mutants.

It's a by product of trying to keep franchises separate in a shared universe. You don't want to have the Avengers involved in the X-men books because you want stories about the underdogs persecuted by society. But since it's a shared universe, you have to ask why the Avengers don't stand up for those persecuted even though the story is dependent on them not getting involved. It'd be like the Flash arriving in Gotham and putting all of Batman's villains behind bars in a few seconds. It makes sense in-universe but not if you are also trying to tell a Batman story in Gotham.

You can probably close this thread after that explanation, there's not a whole lot else to say that would clarify any better than this.

with them divided it always seems to me like Marvel has 2 universes in one.

It sells i guess